back firing

TheNotoriousMogg · #1 07-14-2003, 02:36 AM

Hey fellas,

me and my bud changed his sparkplugs and wires on his 96 mustang, now the car backfires, not loud but lil spattering backfires. What is wrong with it and how can we fix it? Please help, thanks!

HiFlow5 0 · #2 07-14-2003, 08:08 AM

Did you gap the plugs properly? What plugs did you use? Are all the wires hooked up to the correct cylinder, and not crossed?

TheNotoriousMogg · #3 07-14-2003, 10:34 AM

All wires are good, but how do you know if you gapped plugs right?

Grande · #4 07-14-2003, 02:13 PM

Quote:

Originally posted by TheNotoriousMogg
All wires are good, but how do you know if you gapped plugs right?

Did ya use a feeler gayge?

rerun · #5 07-14-2003, 02:59 PM

yea dude... before you put in new plugs you have to gap them first... and also if you did are the wires to close to the headers/manifolds? they could be getting to hot

TheNotoriousMogg · #6 07-14-2003, 07:33 PM

Quote:

Originally posted by Grande

Did ya use a feeler gayge?

whats that?

rerun · #7 07-14-2003, 10:42 PM

its the tool that you use to messager the space betweem the.. hell, chances are you wouldn't understand the text book answer, so here goes.. you know that littel metal rod (its bent 90*) well the space from that to the spark plug... you gotta set it right or else shit happens

Grande · #8 07-14-2003, 11:26 PM

Quote:

Originally posted by TheNotoriousMogg

whats that?

, it s a feeler gauge. you also use it to do valve adjustments. It looks like a pocket knife with many blades of different thicknesses, like .025 of an inch. or sometimes its also this thing that looks like a coin next to the cash register at Auto zone, or Advance Auto, and it has numbers on it's edge.

Grande · #9 07-14-2003, 11:28 PM

here's a picture:
http://www.leevalley.com/wood/page.a...urrency=2&SID=

Unit 5302 · #10 07-14-2003, 11:36 PM

In many cases spark plugs come pre-gapped, though checking the gap still is still a very good idea.

In depth spark plug replacement.

http://www.bullittarchive.com/Maintenance/Spark_Plugs/

68 Stang · #11 07-16-2003, 08:51 PM

Boy, your on the ball, Unit 5302.

HiFlow5 0 · #12 07-17-2003, 08:49 AM

Quote:

Originally posted by Unit 5302
In many cases spark plugs come pre-gapped, though checking the gap still is still a very good idea.

In depth spark plug replacement.

http://www.bullittarchive.com/Maintenance/Spark_Plugs/

Depending on vehical and type of spark plug. I have seen plugs that were supposed to be pre gapped, which were way off. It's just piece of mind to double check the gap, IMO

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